package com.itheima.security;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import com.itheima.service.UserService;

import java.util.ArrayList;
import java.util.List;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

import java.util.Set;

@Component
public class SpringSecurityUserService implements UserDetailsService {
    @Reference
    private UserService userService;
    //根据username查询用户
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

        User user=userService.findUserByName(username);
        if (user==null){
            return null;
        }
        //创建权限集合
        List<GrantedAuthority> list=new ArrayList<>();
        //遍历角色
        Set<Role> roles = user.getRoles();
        for (Role role : roles) {
            //获取角色keyword
            list.add(new SimpleGrantedAuthority(role.getKeyword()));
            Set<Permission> permissions = role.getPermissions();
            //遍历权限
            for (Permission permission : permissions) {
                //获取权限keyword
                list.add(new SimpleGrantedAuthority(permission.getKeyword()));
            }
        }
        //安全框架自动校验密码
        UserDetails userDetails=new org.springframework.security.core.userdetails.User(username,user.getPassword(),list);
        return userDetails;
    }
}
